奥巴马每周电视讲话:副总统乔·拜登呼吁团结一致制止暴力 Although I didn't know the five police officers who were killed, or the seven who were wounded in Dallas this week - I really did know them. 虽然我不认识本周达拉斯被枪杀的五名警察,以及负伤的七名警察,但我确实了解他们。 They were the f 英语演讲 2020-08-14 hisen